模糊限制语是语言交际中的普遍现象,是相对于精确限制语而存在的一种语言形态。本文主要根据“合作原则”和“礼貌原则”来探讨模糊限制语的语用功能,指出模糊限制语可以使得语言表达更加准确得体。 Hedges are a common phenomenon in verbal communication and a linguistic form that exists relative to precise restrictions. This paper mainly discusses the pragmatic functions of hedges according to “Cooperative Principle ” and “Politeness Principle ”. It is pointed out that hedges can make language expression more accurate.